Relay Module
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DC7-80/5V Powered ESP8266 WIFI Single Channel 30A Relay Modu -
Domestic simple PLC industrial control board compatible with -
Bluetooth Single-Channel MOS Switch Module 5-30V Input Bluet -
ESP-12F WIFI Eight-Channel Relay Module ESP8266 Optional Enc -
ESP32 Modbus TCP Four-Channel Relay Module Wired/WIFI Develo -
Modbus RTU Dual-Channel Network Relay Module Wired Ethernet